'''
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License") you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
'''


'''
 * Implement base64binary type. Most of the work is done in the superclass.
 * This only needs to implement the unparsing.
'''
import base64

from base.datatypes.xsd.XSDbinary import XSDbinary
from base.shared.DatatypeFormatException import DatatypeFormatException

class XSDbase64Binary(XSDbinary):

    # param
    # return
    def __init__(self, typename):
        super().__init__(typename, None)

    '''
     * Convert a value of this datatype out
     * to lexical form.
    '''
    # @Override
    # param Object
    # return String
    def unparse(self, value):
        if isinstance(value, list):
            return base64.b64encode(value)
            #return Base64.encodeBase64String((byte[]) value)
        else:
            raise DatatypeFormatException("base64 asked to encode an unwrapped byte array")
        
    

